THE NEW YORK TIMES BESTSELLER. Internationally bestselling author Gretchen Rubin has helped millions of readers get happier. Here she tackles the critical question: How can we make good habits and break bad ones? We feel exhausted, but also feel jacked up on adrenaline, caffeine and sugar. We feel frantically busy, but also feel that we're not spending enough time on the things that really matter.' Were truer words ever written?